Calculate the delta h of this reaction
When 28.0 ml of 0.500 M H2SO4 is added to 28.0 ml of 1.00 M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, the temperature rises to 30.17 degrees Celsius. Calculate the delta H of this reaction.
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Ammonia will react with oxygen in the presence of a copper catalyst to form nitrogen and water. From 164.5°C to 179.0°C, the rate constant increases by a factor of 4.27. What is the activation energy of this oxidation reaction?
A gas is compressed in a cylinder from a volume of 20 L to 2.0 L by a constant pressure of 10 atm. Calculate the amount of work done on the system.
At 80 °C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mm Hg, respectively. What pressure must be exerted on the surface of a solution containing one mole of X, three moles of Y, and two moles of Z for boiling point to b
A graduated cylinder contains 155 mL of water. A 15.0 g piece of iron (density = 7.86 ) and a 20.0 g piece of lead are added. What is the new water level in the cylinder?
A metal objet with a mass of 19 g is heated to 96 degree celcieus, then tranfered to a clorimeter containing 75 g of water at 18 degree celcieus. The water and metal objet reach a final temperature of 22 degree celcisus. What is the specific heat
Silver nitrate and sodium phosphate are reacted in equal amounts of 200.0 grams each to produce Silver phosphate and sodium nitrate.
When o.514 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.8 to 29.4 degree Celcius. Find delta energy reaction for the combustion of biphenyl in KJ/mol biphenyl. The heat capacity of the bomb calor
A chemistry student needs of 40 ml chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48g x cm^-3 . Calculate the mass of chloroform the student should w
The total volume of both metals is measured by the displacement of water to be 427cm^3 and the total mass is 4.36 kg . What percentage of the spheres are copper?
An empty vial has a mass of 67.77 g. If the vial has a mass of 244.56 g when completely filled with liquid carbon terachloride (d = 1.59 g/cm3), what is the volume of the vial?
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